Lubricator



E. a. CRITCHLOW.

' LUBRICATOR.

APPLICATION FILED APR. 16, 1918.

1,325,002. Patented Dec. 16,1919.

PATENT OFFICE.

- EDWARD con CRITCHLOW, or 030mm, CALIFORNIA.

LUBRICATOR.

rszsaa Specification of Letters Patent.

Patented Dec. 16, 1919.

. Application filed April 16, 1919. Serial No.- 290,549.

' all concern:-

Be ';it'known that I,;EnwiiRn C. CRITClf- -.Low,- acitizen of the UnitedStates, residing :V-sin the city ofYOrcutt, county of SantaBari -S hara", and State of: California, have in'ventcd -'a;':=-?certain=;a1ew; iii-11d useful Lubricator, of awiwhich the following. is a specification. v

This invention relates to a system whereby 3; ieibearings and othe f partsof vehicles and mano achineryima'fy be i'reafdily lcharged with grease or; othenglubricanta a Thi s,system eliminates i .theznse-ofthe ordinary grease, cups and oped; eration of filling-such grease cups w th lubr1-' cant/2;: :ilildii em. 16 Objects gofnthis inyention in common with an athose'of'imyrcopendmg .apil cat on for patuentifiledflanuary 30, 1919, er1alNo.274,061,

I are to 'facilitate theappl ication of lubricant to theparts which;requira lubr cation; to

;20 provide aiconstructiomwhich will preventl waste oftbegreasqor other; lubr cant while I a the operation ofapplyingthe greaselis pro ceedingato provide a 'COIISCIUCHOH whereby the nozzle. may be readily applied to variaz'tmuslyilocated.parts ofa'vehicle or other ma- 1 made connection between the 'part requiring c 'lubrication and the lubricant force pump or I1. I 7 we. 1 :80 In said-prior appl cation prov1s1on was made -fo'r:connecting,theyalvechamber at its side or-eend lto .the'. pu1npv.tnbe so that the valve chamber couldbe applied tonipples positioned-at various angles on the 'veliieleor machine. Anobject of thisinvent on 15 to provide a construction wherebydhe valve chamber can be readily. turned into difi'ernt.,positionsl tofchangenthe direction of dis- *charge' relative-Ito the aiiis of the grease 40 pump without it being-necessary to first d etachthe valve chamber and then apply it'to sthmprunp tube in a different position.

- Anothenobject is to provide a construction that facilitates packing or carrying of the i 415 grease gun and the parts attached thereto v when the same are not in use. v p 1 .Otherobjects-and advantages will appear -;in the subjoined detailed descrlptlon.

- I The accompanying drawings illustrate the 60 invention,

Figurelis a perspective view disclosing the various elements of the system and showing the manner of application of the grease gun to one of the springs of a vehicle, a fragment of which is Shown.

Fig. 2 is a side elevation, partly in mid :2 ehine ;'rai1.dto provide .for a tight, and, easily f,

nozzle end'of the gun, therealso bein shown' an elbow nipple-extension screw-t eaded ftube'2 with a suitable nozzle 3, The gun 1 .may be of any construction capable of forcstem 7. This type of section, of a lubricating system built in accordance withthe provisions of-this invention, the nipple for connecting'the fnozzle with the part "to "be lubricated not being shown in this view. The nozzle is shown in solid line's in one of its positions for use and m dotted .carrymg.

lines position ffor packing o'r,

Fig. 3 isasid'e elevation of the lowr'portion of-F ig. 2 from the left of said figure, the

no zzle"'be 1iig turned with its longitudinal a ms substantiallyatright angles to"thelongitudmal axis of -the cylinder l o ffthe grease gun-i Fig. 4 n s 'an"enlarged f sectional elevation of "the'hozzle and the nipple to *which the ?1e"is" applied; :L This 'view elseshows i sect on a vehiclespring to which the nipple. is'attachedj '3.

, Fi 5 isalplanfsectionjon'line indicated Fig; 6 1s anenlarg'ed sidefelevationof the nipple shown in Fig. 4, the resilient dust cap also being shown in position 'on the nipple and said dust cap being in section. 1

Fig. 7 vis a side elevation of the dust cap shown inFig. 6. 'TFig, 8 is a fragmental, elevation of the 86 into the part tobe lubricated which-is shown in section. This inventlon provides a suitable lubri cant force pump or gun 1 connectedby a 90 ing the lubricant 4 therefrom through the. tube 2 and nozzle 3. In the drawings the gun 1 comprises a cylinder 5 in'which works a plunger 6 operated by a screw-threaded a n is well known and therefore it is readily understood that turning of the stem 7 in one direction will cause the plunger 6 to move toward the nozzle end of the cylinder 5 so as to bring pressure to bear upon the lubricant 4 to force the same from the un.

The nozzle 3 is prefera ly constructed as follows: The nozzle 3 comprises a valve chamber 8 provided at one end with a cap 9 which may be screw-threaded or otherwise secured in place on the-valve chamber. Inside of the cap 9 is a flexible or yielding washer 10 preferably of rubber or the like, 116 said washer being provided with a hole 11 registering with a hole 12 in the cap 9,

the axis ofithetip being substantially at Adapted to seat against the Washer 10 so as to normally close the hole 11 is a ball valve 13.

The pressure of the lubricant 4 upon the ball valve 13 may be sutiicient to close the ball valve against the washer 10 to close the hole 11 when the system is not in use and therefore it is not absolutely necessary to employ-a spring such as that indicated at 11 in Fig. 4. However, theuse of the spring-1t is preferalde so as to always'insure against leakage ot the flubricant through the hole ll oi the washer, said spring firmly holding th'elhall valve'on its seat formed by the washer 10.1 r

. The valve chamber 8 is proyided with screw-threadedport 15 hits sideiwall to receive'the tube 2. The tube 2," is reduced outwardly from substantially V the diameter of the cylinder 5 teen an'gularlyf'bent tip,

fright anglesto ithe axis ofj1'the' cylinder 5.

Preferab in the. hereinbefore identified co pending' -.applieation. Y

I y'f-j also i the reduction "in' diameter of the tube 2 is not'syinmetrical inifespect to the;rIOngitudinaLa is ,pf tl e gung the with the gun 1 when the jio zzle s turned straight withi-theagun as 1n.;F 1g. .;2;of the lowsi Whe similar to that shown at 25 'in -F :7. The

dust cap 25'may be made'of rubber or=other 1e nipp e is provided "with: laterally exten ing-e 'en'in'gs in the form 'of slots 27 and th "futi ity"of' -tl 1ese"slots' willsibeimade clear he" inafter; 164 -it't In .pra icertlie's stem operates as folit is desired toapply rease to the n'ipp'l'e 1 leading to any particuarzbeae ing' surface fi'a 've'hicle or other machine, the dusteap 5" will be removed and the nozzle 3 will be brought into axial alinement with nag-nipple17mm measure-w ll. "be aples xliiilt or spring materiah The outertend upon as iii'p ple 17fVherr thetwashcr is sufficiently 1oiig"ito project beyond the inner drawings} T}j' {adva1itage mins sesame-37 E566 of"'the'wash'er me a-h displace the tion. just described is.thatflahe gun with the' nozzle a h m sa emxare packed and carriedthanifithetip were not? thuslaterall ofi'seta gwhen', the nozzle 3 is rotated .on the tip 15am path of rotation is in a plane parallel with,thelongitudinal axis Ofgthfl n so that the nozzle may be turned 'at i'diflerent angles relative to the longitudinal axis of-the gun without. it being necessar todetach the nozzle andfipply it to the tn 2 in a difleren't position as s The partsof the vehicle orlo ther riiachine requiring lubrication are, provided with nlpples corresponding vwith that shown at}; 17 in Figs. 4:, and 6 of the drawings jln Fig." 4 the nipple 17 is shown screw threa'ded into a hole 18 of a bearin 19 of a leaf spring 20. The springQO u orms a portion of a vehicle which'iis fragmentarily shown at 21 in Fig. 1. The shackle belt of the spring is shown at 22 and lubricant admitted through the nipple 17 luhricates the bearing surfaces of the spring 19 and bolt as is readily understood. Some of the parts of the vehicle or other machine to be lubricated may he in such positions that ifthe nipple 17 were applied thereto directly the gun 1' could not he used because of interference of other parts of the vehicle. Therefore. in

' some instances an L .23. formin a ni le ball valve 13 from'its closed o's'ition against thewas lierfias in Fig-.42 T e operator will then "manipulate the stem 7" to bring ressure to bear upon the lubricant 4 an the lubricant will pass through the tube 2 thence through the valve chamber 8 and thence through the'slots 27 into the nipple -17 to the parts'to belub'ricatedl It is clear that if it were not for the slots 27 or equivalent construction the lubricant could not pass from the valve-chamber 8 into the nip- -ple because the ball valve ;13- seats against the end of the nip le 'when the nozzle is in place on the nipp e. The washer fits the nipple 17 tightly and thus prevents leakage of the lubricant'ar'ound the nipple'when the nozzle is in lub'ricantapplying' position.

After the operator has forced thedesire'd quantity of lubricant into the nipple 17 he .will withdraw the nozzle 3 therefrom and replace the dust cap 25. When the operator withdraws the nozzle from the nipple, the pressure of the lubricant and spring upon the ball valve moves said valve into position against the washer 10 so as to close" the hole 11, thus preventing the 'lubrican'tfrom oozing out of the gun. "lheo'perator will then proceed to apply lubricant to other parts of the vehicle inthe same manner. In some instances it may be necessary inorder-to apply the nozzle to the nipple to eh'zmge the position of the nozzle with referenceto the tubeZ and this may he readily done as hereinbet'ore explained by simply turning the tube 2 about the axis of thebent tip of the tube 2 in a plane parallel with the longitudinal axis of the tube.

Another way of operating the system is to first produce pressure on the lubricant in the cylinder before the nozzle is applied to the nipple, and this may be done for the reason that the stem is screw-threaded into the cylinder and the ball Valve prevents'the outflow of the lubricant. After the stern has been rotated to produce the desired pressure upon the lubricant, the nozzle will be applied to the nipple as before, thus opening the ball valve and allowing the lubricant to flow into the nipple. This is quite an advantage as in many instances the stem cannot be handily operated when the nozzle is applied to the nipple and, if the pressure on the lubricant is not produced before applying the nozzle to the nipple, the operator will be required to employ both hands'in the operation, one to hold the cylinder and the other to manipulate the stem. This noted advantage could not be obtained if the stem were not screw-threaded into the cylinder but merely reciprocated after the manner of -having a top bent substantially at right angles to the longitudinal axis of the gun, and a valved nozzle rotatively connected at its side to the top, the path of rotation of the nozzle being in a planeparallel with the longitudinal axis of the gun.

Signed at Santa Maria, Gal, this 8th day I of April, 1919.

EDWARD COE CRITCHLOW. Witnesses:

WM. T. LAUGHLIN, W. L. HOPKINS. 

